leave hanging

leave (one) hanging

To withhold information from one when it is expected to be delivered, or more broadly to leave one in an unsettled state or without some kind of resolution. Hey, don't leave me hanging—did you get the job or not? The consultants were supposed to deliver the report last week, but they've kind of left us hanging.
See also: hanging, leave
Farlex Dictionary of Idioms.

leave someone or something hanging (in midair)

 and keep someone or something hanging (in midair) 
1. Lit. to keep someone or something suspended in midair when support for the person or thing is removed. The ladder collapsed and left me hanging in midair. Fortunately, I grabbed onto the windowsill.
2. Fig. to suspend dealing with someone or something; to leave someone or something waiting to be finished or continued. She left her sentence hanging in midair. Tell me the rest of the story. Don't leave me hanging in midair.
See also: hanging, leave
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

leave hanging

Also, leave hanging in the air or in midair . Keep undecided, uncertain, or in suspense. For example, Since we hadn't found a big enough hall, we left the final date hanging, or She couldn't figure out a good ending for the book, so her audience was left hanging in midair .
See also: hanging, leave
The American Heritage® Dictionary of Idioms by Christine Ammer.
See also:
  • be one of a kind
  • drive (one) out of office
  • force (one) out of office
  • force out of office
  • give (one) (one's) head
  • give head
  • give somebody their head
  • give someone their head
  • cooking for one
  • 1FTR
References in periodicals archive
Those little plastic bags of dog poo that people carefully tie up and then leave hanging from trees or rosebushes or the gates of parks?
This week's winner is Melanie Lodge, of Mirfield, West Yorks, who says: "Don't leave hanging baskets empty - put an old plate on top and make it a bird table."
"Half a million for the house and three-an-a-half million for the No8 Rangers jersey I'll leave hanging in the hallway for the new owner."